I prefer the full size images. I'm sure most of the TG members are going to be reasonable with the sizes, and only post what they need to view the content properly, and not overwhelm the forum. However, having said that if people keep posting images that need horizontal scrolling and long download times, then the thumbnails need to replace them. The other option is for thumbnails for everything over a certain size (as it is now), but make that size much bigger than it is now. Follow Xara's lead and go with 500 pix or so.